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Finding the Fourth Proportional to 30,239, 45,356.04 and 19,113.24

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Solution

The fourth proportional to 30,239, 45,356.04 and 19,113.24 is: 28,668.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239 : 45,356.04 = 19,113.24 : x
  2. Step 2: Convert to fraction form
    30,239/45,356.04 = 19,113.24/x
  3. Step 3: Cross multiply
    30,239x = 45,356.04 × 19,113.24
  4. Step 4: Simplify right side
    30,239x = 866,900,877.97
  5. Step 5: Solve for x
    x = 866,900,877.97/30,239
  6. Step 6: Final answer
    x = 28,668.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.